diff --git a/Gemfile.lock b/Gemfile.lock
index d35e235..8187beb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,7 +89,8 @@ GEM
     pg (1.1.4)
     puma (3.12.1)
     rack (2.0.7)
-    rack-cors (0.4.1)
+    rack-cors (1.0.5)
+      rack (>= 1.6.0)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)